If you're seeing this Failed (Facebook Timed Out) error in some of your parties - you're not alone! Facebook has an intermittent bug that, while it is not affecting all posts, groups, or accounts, it is affecting enough!
The good thing is that it's possible with this bug that it did post anyway but FB incorrectly sent the failed notice. So the first thing to do is check to see if you can see that post in your group anyway - if it's there then you're good and can disregard that error.
If It did for sure fail you can try rescheduling - often it goes through on the second try. Otherwise, you may need to post that one manually and reach out to support if it happens again. While we're seeing an uptick in the posts from FB it's not typically happening more than once or twice per party.
We apologize for the inconvenience this causes and please reach out to support if there's anything we can do to help you!